Title :
Doppler velocity calibration study for Cloud Profiling Radar on earthcare
Author :
Horie, Hiroaki ; Ohno, Yuichi ; Sato, Kenji ; Nakagawa, Katsuhiro ; Takahashi, Nobuhiro
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol. (NICT), Koganei, Japan
Abstract :
The Cloud Profiling Radar (CPR) on EarthCARE satellite is the first spaceborne Doppler radar for cloud and precipitation. In order to calibrate Doppler velocity, the external calibration study using active radar calibrator (ARC) is needed. The ARC must have the function to measure amplitude and phase of signal for the calibration. In addition, measurement of antenna beam angle is needed because satellite velocity is contaminated to radial velocity of radar measurement. Then the feasibility experiment was performed using the transmitting signal from CPR of CloudSat. In this paper, the preliminary result is reported and the calibration performance is discussed.
Keywords :
Doppler radar; angular measurement; atmospheric measuring apparatus; atmospheric precipitation; calibration; clouds; geophysical signal processing; spaceborne radar; Cloud Profiling Radar; CloudSat; Doppler velocity calibration; EarthCARE satellite; active radar calibrator; antenna beam angle measurement; calibration performance; external calibration; feasibility experiment; radar measurement; radial velocity; satellite velocity; signal phase; spaceborne Doppler radar; Antenna measurements; Calibration; Clouds; Doppler effect; Satellites; Spaceborne radar; Doppler radar; Spaceborne radar; calibration; millimeter wave radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350434
